Her body proportions were never changed. The updated version includes better lighting, better dialog, and better animations.Is it weird if I prefer the "before" version? Dunno if Im blind, but looks like body proportions were more "correct" before, lower body is too huge and chest is too small now. And no, its not an angle thing, since for her upper body to be that narrow she has to be 2+m high xD
As for your critique of her how her body is proportioned, welcome to anime. Big heads are normal here.